Keystones — Lintel
Five GCSE retrieval questions · 16 September 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00041
Answer: 4.1 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 47°. Find adjacent side
Answer: 25.2cm -
4. Ratio Mixed ratio problems
Simplify: 9:9:6
Answer: 3:3:2 -
5. Statistics Mean
Calculate the mean of: 32, 24, 27, 13, 18, 14, 5, 19
Answer: 19